Robinhood you are correct, good catch. I have been using the tapered pipe tap (npt). The nps tap you show would negate the shank grinding. As long as the major diameter is the same in the finished tapped hole. I can't remember if the taper goes past the nominal value. The reason I used the npt is because that's all I had when I started this method.
As long as the nps tap will leave a loose fit to allow room for the epoxy, my guess it would be more suitable for this job.

Also I didn't mention earlier to the OP that like tapping metal "chips" must be cleaned often to allow the tap to "cut" the wood. I believe the flutes in the straight thread tap will allow better/easier chip cleaning than the tapered tap. That would be a plus also. I probably will order one & try it on one of my next wood stock projects.

Thanks for the heads up Robinhood.